<template>
  <div class="app-container">
    <el-form class="teacherForm" label-width="120px">
      <el-form-item label="讲师名称">
        <el-input v-model="teacher.name"/>
      </el-form-item>
      <el-form-item label="讲师排序">
        <el-input-number v-model="teacher.sort" controls-position="right" :min="0"/>
      </el-form-item>
      <el-form-item label="讲师头衔">
        <el-select v-model="teacher.level" clearable placeholder="请选择">
          <el-option :value="1" label="高级讲师"/>
          <el-option :value="2" label="首席讲师"/>
        </el-select>
      </el-form-item>
      <el-form-item label="讲师资历">
        <el-input v-model="teacher.career"/>
      </el-form-item>
      <el-form-item label="讲师简介">
        <el-input v-model="teacher.intro" :rows="4"  type="textarea"/>
      </el-form-item>

      <!-- 讲师头像：TODO -->
      <!-- 讲师头像 -->
      <el-form-item label="讲师头像">

        <!-- 头衔缩略图 -->
      <!-- <pan-thumb :image="teacher.avatar"/>-->
        <img
          class="avatar"
          :src="teacher.avatar" alt=""
        >
        <!-- 文件上传按钮 -->
        <el-button type="primary" icon="el-icon-upload" @click="imagecropperShow=true">更换头像
        </el-button>

        <!--
    v-show：是否显示上传组件
    :key：类似于id，如果一个页面多个图片上传控件，可以做区分
    :url：后台上传的url地址
    @close：关闭上传组件
    @crop-upload-success：上传成功后的回调
      <input type="file" name="file"/>
    -->
        <image-cropper
          v-show="imagecropperShow"
          :width="300"
          :height="300"
          :key="imagecropperKey"
          :url="BASE_API+'/eduservice/teacher/uploadPic'"
          field="file"
          @close="close"
          @crop-upload-success="cropSuccess"/>
      </el-form-item>

      <el-form-item>
        <el-button :disabled="saveBtnDisabled" style="width: 200px;margin-left: 600px" type="primary" @click="saveOrUpdate">保存</el-button>
      </el-form-item>
    </el-form>

  </div>
</template>
<script>
  import ImageCropper from '@/components/ImageCropper'
  import PanThumb from '@/components/PanThumb'

  export default {
    components: { ImageCropper, PanThumb },
    data() {
      return {
        teacher:{
          name: '',
          sort: 0,
          level: 1,
          career: '',
          intro: '',
          avatar: ''
        },

        //上传弹框组件是否显示
        imagecropperShow:false,
        imagecropperKey:0,//上传组件key值
        BASE_API:process.env.BASE_API, //获取dev.env.js里面地址
        saveBtnDisabled:false  // 保存按钮是否禁用,
      }
    },
    created() { //页面渲染之前执行
      this.init()
    },
    watch: {  //监听
      $route(to, from) { //路由变化方式，路由发生变化，方法就会执行
        this.init()
      }
    },
    methods:{
      close() { //关闭上传弹框的方法
        this.imagecropperShow=false
        //上传组件初始化
        this.imagecropperKey = this.imagecropperKey+1
      },
      //上传成功方法
      cropSuccess(data) {
        this.imagecropperShow=false
        //上传之后接口返回图片地址
        this.teacher.avatar = data.url
        this.imagecropperKey = this.imagecropperKey+1
      },
      init() {
        //判断路径有id值,做修改
        if(this.$route.params && this.$route.params.id) {
          //从路径获取id值
          const id = this.$route.params.id
          //调用根据id查询的方法
          this.getInfo(id)
        } else { //路径没有id值，做添加
          //清空表单
          this.teacher = {}
        }
      },
      //根据讲师id查询的方法
      getInfo(id) {
        this.getRequest("/eduservice/teacher/findByIdEduTeacher/"+id).then(res=>{
          if(res){
            this.teacher = res.data.data
          }
        })
      },
      saveOrUpdate() {
        //判断修改还是添加
        //根据teacher是否有id
        if(!this.teacher.id) {
          //添加
          this.saveTeacher()
        } else {
          //修改
          this.updateTeacher()
        }
      },
      //修改讲师的方法
      updateTeacher() {
        this.putRequest("/eduservice/teacher/",this.teacher).then(res=>{
          if(res){
            //提示信息
            this.$message({
              type: 'success',
              message: res.message
            });
            //回到列表页面 路由跳转
            this.$router.push({path:'/teacher/table'})
          }
        })
      },
      //添加讲师的方法
      saveTeacher() {
        if(this.teacher.name==null||
           this.teacher.sort==null||
           this.teacher.level==null||
           this.teacher.career==null||
           this.teacher.intro==null||
           this.teacher.avatar==null
        ){
          this.$message({
            type: 'warning',
            message: "请输入完整信息"
          });
        }else{
        this.postRequest("/eduservice/teacher/",this.teacher).then(res=>{
          if(res){
            //提示信息
            this.$message({
              type: 'success',
              message: res.message
            });
            //回到列表页面 路由跳转
            this.$router.push({path:'/teacher/table'})
          }
        })
        }

      }

    }
  }
</script>
<style scoped>
  .avatar{
    height: 150px;
    width: 150px;
    border-radius: 50%;
    border:1px solid #99a9bf;
  }
  .teacherForm{
    width: 1000px;
    padding-top: 30px;
    padding-right: 20px;
    margin: 5px auto;
    border: 1px solid #eaeaea;
    box-shadow: 0 0 5px #cac6c6;
  }
</style>
